Lenovo ThinkCentre M800, Руководство по техническому обслуживанию аппаратной части

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Figure 66. Pivoting the drive bay assembly downward
12. Install the optical drive. See “Replacing the optical drive” on page 104.
13. Install the front bezel. See “Replacing the front bezel” on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 147.
Replacing a memory module
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
The following table provides information about the memory module installation rules that you should
consider when installing or removing a memory module. The “X” mark indicates the memory slots into which
the memory modules should be installed in different situations. To locate the memory module slots, see
“Parts on the system board” on page 35.
Quantity Slot 1 Slot 2 Slot 3 Slot 4
One memory module
X
Two memory modules X X
Three memory modules X X X
Four memory modules X X X X
To replace a memory module, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
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ThinkCentre M800 and M900 Hardware Maintenance Manual